JPS60241560A - Rotation drive transmission device - Google Patents

Abstract

PURPOSE:To reduce or prevent abrasion, slackening, noise, slippage generation of heat by forming a ceramic layer on the inclined wall of a pulley. CONSTITUTION:A pulley comprises side plates 1, 2 disposed on left and right sides respectively having side walls 1', 2' to form a V-groove 3 on the outer peripheral side. A belt 4 is engaged and laid on the V-groove 3 portion between pulleys formed by loosely aligning a lot of metallic piece members 6' axially by a laminated endless thin metallic belt 5. Either the surfaces of inclined walls 1'', 2'' at the V-groove 3 portion of the pulley or the surfaces of left and right inclined surfaces 6', 6'' of the piece member 6 of the belt 4 engaged and laid on the surfaces are coated with Mo layers 9. The other surfaces are coated with ceramic layers 10 having at least one composition of SiO2, Cr2O3, Al2O3 and ZrO2 which are chemically combined by Cr2O3.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an improvement of a rotational drive transmission device that requires a relatively large transmission force using a belt drive method.

[Problems with conventional technology]

Conventionally, in a rotary drive transmission device using a pulley and a belt, the frictional surfaces between the pulley and the belt have generally been constructed with a steel surface.

However, under a relatively large transmission force and under high-speed rotation conditions, the frictional engagement surfaces generally tend to wear out quickly, and this wear causes the belt to become loose on the tensioning rack. In addition, the wear and loosening may cause noise, and slippage is likely to occur between the mutually engaging surfaces, resulting in a reduction in drive transmission efficiency. There were problems such as generation of heat due to friction.

For this reason, as a means to reduce the wear depending on the usage conditions, only the mutual frictional surfaces are partially quenched to make them hardened surfaces, but such treatment cannot be applied to cast products. The treatment range is forced to be limited, and at the same time, only the mating surfaces must be partially hardened, which generally complicates the treatment and increases manufacturing costs. Met.

[Purpose of the invention]

In order to effectively solve the above-mentioned problems of the prior art, the present invention has been developed to process a wide range of products, which are limited to not only steel products but also forged products and cast products, and also partially by relatively easy processing. It forms a surface condition with improved wear resistance and heat resistance on the frictional surface of the
The purpose of this invention is to propose a rotational drive transmission device that reduces and prevents a series of problems such as slippage and heat generation.

[Structure of the invention]

The present invention provides a pulley having a pair of left and right side walls forming a V-groove on the outer circumferential side, and a laminated endless surface that is hung and stretched between at least the opposite inclined walls of the groove portion of the pulley side. The surfaces of the inclined boxes on both the left and right sides of the piece members of a belt constructed of a large number of metal piece members loosely arranged in rows on a thin metal band, or the sloped surfaces on both left and right sides of a belt consisting only of laminated endless metal bands. 810 g chemically bonded with the surface of the Mo layer on one side and Cr2O on the other side,
At least 412il of Cr2O3, AkOs and Zr0g
The gist of the present invention is a rotational drive transmission device formed by coating a ceramic layer having a positive composition, and embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is an enlarged longitudinal sectional view with a partial cutaway of the mounting part of the rotational drive transmission device of the present invention, in which (+1, (2+) are left and right side wall plates, and the respective side walls (1'), ( 2
') to form a V-groove (3) on the outer peripheral side to form a pulley. (4) is a 1-shaped endless thin metal strip (5) K.Therefore, a number of metal piece members (6), . In the belt, the surfaces on which the inclined walls (1") and (2") K of the V-groove (3) on both the left and right sides of each piece member (6) abut and engage are inclined surfaces (6'), (6"), which are hung and stretched over the respective V-grooves (3) between the pulleys.

In Figure 2 showing another example of fruitfulness, (7)? -1 A belt consisting only of a laminated endless metal band (8), and similarly, both left and right sides are covered with the inclined walls (1") of the groove (3).
), (2") and the inclined surface (7'), (7
), and the V-groove (3) on the pulley side.
), the surfaces of the inclined walls (1") and (2"), and the bridge member (6) on the belt (4) side that is hung and stretched over the surfaces;
The sloped surfaces (6') on both left and right sides of ..., (6'') surface, or the sloped surfaces (7') on both left and right sides of the belt,
(7″) and either one KMo layer (9),
On the other hand, 810□ chemically bonded by K Cr, 05
, Cr205, AmO11, and ZrO2.

In addition, N was used for the Mo layer (9) during adhesion formation.

The ceramic layer Ql is easily formed by plasma spraying or vapor deposition using the CVD method, and the ceramic layer Ql is formed by adding sand stone (8102), oxidized chromium(
At least one fine powder of Cr2O3), fused alumina (α-AI403) and stabilized zirconia (ZROA) is added to the slurry, the surface is dipped or coated with a brush, and then heated at 350°C after drying. 600°
By applying heat treatment to the C range and then repeating these dipping or coating and heat treatment a desired number of times, C
Ceramic Nl001 chemically bonded by r203 is formed.

[Operation of the invention] Since the present invention applies force based on the above-mentioned configuration, when transmitting rotational drive, the surfaces of the inclined walls (1") and (2") of the V-groove (3) part and the bell (4) @ The sloped surfaces (6'), (6") on both the left and right sides of the bridge member (6), ... or the surface of the belt (
The mutual adhesion surfaces of the Mo layer (9) and the ceramic layer (11) formed on the surfaces of the left and right inclined surfaces (7') and (7'') of the 7) side form a frictional surface. Therefore, due to these mutual coating properties, the friction coefficient value on the drive transmission surface is approximately 0.78 μm (approximately 1.5 to 2.0 times that of the conventional steel surface). ) and at the same time significantly improve wear resistance and heat resistance.

〔Effect of the invention〕

As described above, the rotary drive transmission device according to the present invention can reduce and prevent wear on frictional surfaces, belt slack, noise, slippage, heat generation, etc. over a long period of time due to the mutual coating properties, and improve the rotational drive transmission. It has many characteristics that allow it to be applied to a wide range of castings, with good efficiency, and can be easily formed even in parts depending on the treatment method used during deposition. It is a useful rotational drive transmission device.

[Brief explanation of the drawing]

FIG. 1 is an enlarged partial longitudinal sectional view with a notch showing the main parts of a rotary drive transmission device according to an embodiment of the present invention, FIG. 2 is a partial vertical sectional view of the same according to another embodiment, and FIG. 3 FIG. 3 is a diagram showing how the rotational drive transmission device of the present invention is used. (1'), (2')...Side wall, (1"), (2"
)... Slanted wall, (3)... V-groove, (4)... Belt, (5)... Muendanchoniku metal body, (6)... Piece member, (6') , (6")...Slanted surface, (7)...Belt, (7'), (7")...Slope, (8)...
・Mudan Kingyoku Teitai, t91 = °MO layer, (II... Ceramic layer.% Applicant Usui Kokujo Sangyo Co., Ltd. Figure 1 Figure 2 Figure 3M

Claims (1)

[Claims] The surfaces of at least the opposing inclined walls (l") and (2") of the V@ section (3) formed on the outer peripheral side of the pulley, and the V-
Laminated endless thin metal strip (5) hooked and strung in the groove (3) A large number of metal bridge members (6, . . . ) arranged in loose rows
The bridge members (6, . . . ) of the constructed belt (4)
) (6'), (6'') surfaces on both left and right sides of (7) 11, or bells consisting only of laminated endless gold I14?# body (8) (7) 11 ), (7“
) and the surface of the KMO layer (9) on the one hand and the surface of the KMO layer (9) on the other hand.
Bias, C chemically bonded by Cr, O, K
A rotational drive transmission device characterized in that it is formed by depositing ceramic m (1G) having at least one composition of r1e3, Al2O2, and ZrO.